I like that Australia strategy, too. That's where some of the strategy around the neutral army can come in when you're playing a two person game. If your opponent gets dealt some territories in that part of the board, then you want to place the neutral army pieces there so they will have a harder time winning full control over the continent.
It wasn't until the 90s that those variants and house rules became published suggestions, but that reinforces my original point...the game has a lot of luck built into in it for a strategic game, and the players themselves "fixed it", with the publisher picking up on the best fixes.
I like that Australia strategy, too. That's where some of the strategy around the neutral army can come in when you're playing a two person game. If your opponent gets dealt some territories in that part of the board, then you want to place the neutral army pieces there so they will have a harder time winning full control over the continent.